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• Create Date October 8, 2020
• Last Updated February 2, 2021

Ecology Salmon Spawning Webinar

Ecology Salmon Spawning Webinar.

We are considering amendments to the surface water quality
standards (WAC 173-201A):
̶ Revisions to the freshwater dissolved oxygen criteria (WAC 173-201A-200)
̶ Development a new fine sediment criteria
 Purpose:
̶ Improve rules that protect salmonid spawning habitat
 Ensure sufficient oxygen levels in spawning gravel
 Ensure sediment can support spawning fish and development of early life stages

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